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Date: | Tue, 12 May 1998 00:06:48 +0100 |
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On 11 May 98 at 13:24, Ken Patel wrote:
> We are seeing more and more Crystal/Oscillators failures and it's
> failure analysis report done by manufacturer blames to handling. My
> questions are ...
> (1) Does any one has similar crystal failure attributed to improper
> dropped shipment during transit/ mishandling on floor and how the
> problem was over come?
Please describe the failures: Won't work, frequencies shifted... ?
> (2) Is there any reliability study done to evaluate g-force impact
> on the crystal? Are those kind of data available from crystal
> suppliers? (well, I am going to ask them but before that)
Consider possible damage by ultrasonic cleaning. The crystal
suppliers should be able to specify allowed cleaning procedures.
Regards
Matthias Mansfeld
-----------------------------------------------
Matthias Mansfeld Elektronik
* Leiterplattenlayout, Bestueckung
Am Langhoelzl 11, D-85540 Haar
Postfach 1143, D-85529 Haar
Tel.: 089/4620 0937, Fax: 089/4620 0938
E-Mail: [log in to unmask]
Internet: http://home.t-online.de/home/matthias.mansfeld
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